[Pharo-project] Shout colors in 1.1 dev

I was trying to figure out why nil was "part of the comment" in a line like self loadMetacelloPackageLatest:'Seaside' version: "'Seaside 2.8'" nil. when I realized that lots of things are colored the same as comments :( One of the most useful things about syntax coloring is to make comments clearly separate from the rest of the code. The defaults could use some tweaking.